# TD Snap® vs Echo

The clearest difference is rating: Echo at 5.0 against TD Snap®'s 4.2. Echo also leads on in-app purchases (none vs 10) and update cadence (every 2 weeks vs every 2 months). TD Snap®'s advantage is ratings volume (810 vs 1) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. TD Snap® sells 10 in-app purchases, starting at $4.99 per month. Echo asks for nothing beyond the download.

Echo holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: TD Snap® has 810 ratings behind it against 1, so its average is the more settled of the two.

TD Snap® ships an update every 2 months, Echo every 2 weeks. The most recent releases landed on September 21, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | TD Snap® | Echo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (810 ratings)](https://appshunter.io/ios/app/td-snap/id1072799231/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/echo-auditory-scanning/id6451412975/reviews)** |
| Number of ratings | **810** | 1 |
| Positive reviews | 29.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Subscription | **Free** |
| Size | 3.4 GB | 9 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Tobii Dynavox LLC](https://appshunter.io/developer/446210474) | [Ace Centre](https://appshunter.io/developer/1304772616) |

## What reviewers say

### TD Snap®

[App page](https://appshunter.io/ios/app/td-snap/id1072799231)

This communication software assists individuals with speech and language disabilities by offering symbol-supported and text-based communication options. It features customizable page sets and editing tools, accessible via touch, eye gaze, and switch access. A subscription is required after a trial period.

**Highlights:** Symbol-supported and text-based page sets, Customizable editing tools, Touch, eye gaze, and switch access, Picture Communication Symbols library, Visual schedules and timers, Cloud-based content syncing

**Features:** Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gateway Monthly | $4.99 | per month |
| PODD Monthly | $4.99 | per month |
| Metacom Monthly | $4.99 | per month |
| Speaking Upgrade Monthly | $9.99 | per month |
| Acapela Voices | $39.99 | one-time |
| Nuance Voices | $39.99 | one-time |
| Speaking Upgrade | $49.99 | one-time |
| METACOM Symbols | $49.99 | one-time |
| PODD Page Sets | $149.99 | one-time |
| Gateway Page Sets | $149.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 👍 Customizable
- 🚀 Intuitive navigation
- 👍 Helpful supports and features
- 🚀 Flexible and robust

**What reviewers complain about**

- 🔒 Subscription model for voice
- 🐛 Voice issues after updates
- 💰 Expensive subscription
- 🔒 Removing previously paid features
- 🐛 Crashes and bugs

**Reported bugs**

- Voice disappearing after updates
- Crashes on launch
- Incompatibility with iPad Pro
- Inability to restore purchased content

**Requested features**

- Ability to change undo symbol
- Link to ACCIL image database
- Ability to set user age for appropriate vocabulary
- More robust core vocabulary
- Easier grammar modeling


### Echo

[App page](https://appshunter.io/ios/app/echo-auditory-scanning/id6451412975)

This communication aid uses auditory scanning for individuals with visual and physical impairments. It offers sound cues and distinct voices for navigation and expression, accessible via switches, gestures, or arrow keys.

**Highlights:** Auditory scanning communication method, Sound cues for navigation, Separate voices for cues and speech, External switch access, Swipe gesture control, Arrow key navigation

**Features:** macOS Compatibility, Game Controller support

**In-app purchases:** none


## Frequently asked questions

### Is TD Snap® free?

TD Snap® is free to download, with in-app purchases available.

### Is Echo free?

Echo is free to download, with no in-app purchases.

### Which has better reviews, TD Snap® or Echo?

Echo is rated higher. TD Snap® averages 4.2 out of 5 from 810 ratings, while Echo averages 5.0 from 1 ratings.

### Do TD Snap® or Echo have ads?

Neither TD Snap® nor Echo shows ads.

### Which is updated more often, TD Snap® or Echo?

TD Snap® ships an update every 2 months, and Echo every 2 weeks. Most recently, TD Snap® was updated on September 21, 2026 and Echo on June 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*